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Learning Functional Programming in Go-Packt Publishing(2017).pdf
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上传时间: 2018-03-08
详细说明： Until recently, the message has been Go and functional programming—don't do it. Functional programming (FP) is a perfect fit for multicore, parallel processing. Go is a concurrency baller (with Goroutines, channels, and so on) and already runs on every available CPU core. FP reduces complexity; simplicity is one of Go's biggest strengths. So, what can FP bring to Go that will actually improve our software applications? Here's what it offers: Composition: FP shows us how to decompose our apps and rebuild them by reusing small bu ilding blocks. Monads: Using monads, we are able to safely order our workflows into pipelines of data transformations. Error handling: We can leverage monadic error handling and still maintain compatibility with idiomatic Go code. Performance: Referential transparency is where we can evaluate our function once and then subsequently refer to its pre-computed value. Expressive code: FP allows us to concisely express business intent in our code. We declare what our functions do, without the clutter of error checking after every function call, and without having to follow state changes (pure FP means immutable variables). Simpler code: No shared data means not having to deal with semaphores, locks, race conditions, or deadlocks. Most people have difficulty grasping FP. I did too. And when I got it, I wrote this book. Take this journey with me. We'll see hundreds of illustrations, read easy-to-understand explanations, and implement FP in Go code along the way. I enjoyed coaching soccer. The litmus test I used to determine whether I succeeded as a coach was the answer to this simple question: Did they all register for next season and request me to be their coach? Just like planning practice, I planned each chapter, starting with simple concepts and adding to them. Read this book, then you too will be able to say, I got it. ...展开收缩
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